Hi Camille,
Thanks for writing in! Usually, most possible causes are due to caching or plugin conflicts. Also I would suggest you to check your PHP version and memory limit. Could you please try following our general troubleshooting guidelines below and see if you can isolate the issue.
- Ensure everything is up to date according to our version compatibility list here. Please follow the best practices when updating your theme and plugins. Click here for more information.
- Test for a plugin conflict. You can do this by deactivating all third-party plugins, and see if the problem remains. If it’s fixed, you’ll know a plugin caused the problem, and you can narrow down which one by reactivating them one at a time.
- Make sure that you’re running at least PHP v5.6.x or later to avoid any WordPress related incompatibility issues. If you’re not sure what your server configurations and settings are, install a plugin like WP-Serverinfo (https://wordpress.org/plugins/wp-serverinfo/) and check your server info by head over to Dashboard -> WP Serverinfo area.
- Try increasing your PHP Memory limit by following our guide here (https://theme.co/apex/forum/t/troubleshooting-increasing-php-memory-limit/16935).
Make sure to clear full cache before testing (https://www.wpbeginner.com/beginners-guide/how-to-clear-your-cache-in-wordpress/).
If you’re still having issues, provide us with your WordPress login credentials in a secure note to check your issue further.
Let us know how it goes.
Thanks!